A steel plate built-up beam for a steel-concrete composite beam, which is for the purpose of forming a steel-concrete composite beam by filing the inside thereof with concrete, includes: a pair of web plates spaced apart from each other; a lower flange provided on the lower portions of the web plates so as to connect the lower portions of the pair of web plates; and upper angles provided on the upper portions of the web plates, respectively, such that one leg of the upper angle is coupled to side surfaces of the web plates, and other leg of the upper angle is formed to bend in directions perpendicular to the web plates.

The present anti-ballistic shelter is a reinforced unit configured to comply with both ISO standards for size and weight, and with the U.S. Department of State Certification Standard for Forced Entry and Ballistic Resistance of Structural Systems. Each end and side wall of the unit is reinforced with wall studs that penetrate the unit's structural framework. Even though these wail studs are welded into place, penetration of the wall studs into the framework ensures acceptable blast, ballistic, and forced entry resistance even if the welds are flawed.

The modular anti-ballistic shelter system includes two end units and, optionally, additional middle units for a wider structure. End and middle units may also stack atop each other for multi-story structures. Each unit is configured to comply with both ISO standards for size and weight, and with the U.S. Department of State Certification Standard for Forced Entry and Ballistic Resistance of Structural Systems. Each exterior wall of each end unit and each middle unit is reinforced with wall studs that penetrate the unit's structural framework of beams and frames. Even though these wall studs are welded into place, penetration of the wall studs into the beams and frames ensures acceptable blast, ballistic, and forced entry resistance even if the welds are flawed.

A steel wall stud has a rear wall, two parallel side walls, each side wall having a front end wall that projects away from interior cavity formed by the rear and side walls.

The present technology relates to beams having a cross section defining a plurality of channels and assemblies comprising the beams. The beams can be used to form a beam assembly that is installed inside the truck bed of a pick-up truck. A ladder loader and a solar panel assembly can be pivotably secured to the beam assembly along either the driver side wall or the passenger side wall of the truck bed.

A fire-rated receiver channel includes at least one intumescent or other fire-resistant material strip. The receiver channel can nest with a framing member, such as metal tracks, headers, header tracks, sill plates, bottom tracks, metal studs, wood studs or wall partitions, and placed at a perimeter of a wall assembly to create a fire block arrangement. In other arrangements, a track assembly includes two nested tracks, an inner track and outer track. The assembly is designed so that the outside width of the outer track is equal to or less than the outside width of the inner track to present a substantially flush external surface for attachment of exterior sheathing elements when the assembly is used in an external wall.

The present invention relates to connecting spacing members between support members using spacing members having notches that engage the side edges of the linear shape holes or round holes in the support members whether the holes have rims or ledges to secure the spacing members or crossing other support members having notches in the edges of the lips. The spacer braces can overlap each other and connect at the top, bottom or within the holes of support members. The support members have ledges and rims to eliminate vertical and horizontal movement of the spacer braces with end fingers to stop end the spacer braces.

A resilient channel for joining a board to a support such as a stud, joist or truss in building construction, has a mounting flange and a face flange joined by a web. The mounting flange has a first foot and a second foot disposed at ends of the flange, the first foot bent back toward the support to be disposed between the mounting flange and the support, the second foot bent toward the support, such that the first foot and second foot are disposed to bridge the mounting flange over the support to define a gap between at least a portion of the mounting flange and the support. The face flange has a first bend and a second bend disposed at ends of the flange, and corrugations between the first bend and the second bend.

A structural steel member connecting assembly includes a first connecting member and a second connecting member. The first connecting member is pivotally connected to a positioning portion of a first structural steel member and therefore can be swung. The second connecting member is pivotally connected to the first connecting member such that the two connecting members are rotatable with respect to each other. The second connecting member has a fixing portion coupled with a second structural steel member such that the longitudinal directions of the two structural steel members intersect. With the second connecting member rotatable with respect to the first connecting member, the installation angles of the two structural steel members can be easily changed in order to make a stable engineering structure. The structural steel member connecting assembly features convenience of, and flexibility in, use and has extensive applications.

Described is a method and apparatus for constructing light-weight, modular structures using special openC beams as a top and a bottom frame. Each openC beam comprises a vertical web member, a horizontal top flange extending perpendicularly in a first direction from the vertical web member, a horizontal bottom flange extending perpendicularly in the first direction and substantially parallel with the horizontal top flange and a upper vertical tab extending substantially perpendicularly from a distal edge of the horizontal top flange away from the horizontal bottom flange. Vertical posts are installed in one or more cutouts in the horizontal top flange of each openC beam and a planar surface of each of the vertical posts rests against the horizontal top flange for added support.